9871780

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1$

素因数の和:268

約数の個数: 48

約数和(自身を含む): 21591360

約数和(自身を除く): 11719580

約数列:

[1, 2, 4, 5, 10, 20, 53, 67, 106, 134, 139, 212, 265, 268, 278, 335, 530, 556, 670, 695, 1060, 1340, 1390, 2780, 3551, 7102, 7367, 9313, 14204, 14734, 17755, 18626, 29468, 35510, 36835, 37252, 46565, 71020, 73670, 93130, 147340, 186260, 493589, 987178, 1974356, 2467945, 4935890, 9871780]

約数ペア:

[(1, 9871780), (2, 4935890), (4, 2467945), (5, 1974356), (10, 987178), (20, 493589), (53, 186260), (67, 147340), (106, 93130), (134, 73670), (139, 71020), (212, 46565), (265, 37252), (268, 36835), (278, 35510), (335, 29468), (530, 18626), (556, 17755), (670, 14734), (695, 14204), (1060, 9313), (1340, 7367), (1390, 7102), (2780, 3551)]